global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index 76f87c1..0f9e2cf 100644
--- a/include/configs/at91sam9n12ek.h
+++ b/include/configs/at91sam9n12ek.h
@@ -10,8 +10,8 @@
 #define __AT91SAM9N12_CONFIG_H_
 
 /* ARM asynchronous clock */
-#define CONFIG_SYS_AT91_SLOW_CLOCK	32768		/* slow clock xtal */
-#define CONFIG_SYS_AT91_MAIN_CLOCK	16000000	/* main clock xtal */
+#define CFG_SYS_AT91_SLOW_CLOCK	32768		/* slow clock xtal */
+#define CFG_SYS_AT91_MAIN_CLOCK	16000000	/* main clock xtal */
 
 /* Misc CPU related */
 #define CFG_SYS_SDRAM_BASE		0x20000000
@@ -35,9 +35,9 @@
 
 /* SPL */
 
-#define CONFIG_SYS_MASTER_CLOCK		132096000
-#define CONFIG_SYS_AT91_PLLA		0x20953f03
-#define CONFIG_SYS_MCKR			0x1301
-#define CONFIG_SYS_MCKR_CSS		0x1302
+#define CFG_SYS_MASTER_CLOCK		132096000
+#define CFG_SYS_AT91_PLLA		0x20953f03
+#define CFG_SYS_MCKR			0x1301
+#define CFG_SYS_MCKR_CSS		0x1302
 
 #endif